HIGH TECH IN EARTH SPACE RESEARCH

Application of wavelet analysis for the qualitative assessment of the properties of the communication system on the basis of noise signals of automated control systems for special purpose

Gavrishev A.A., Zhuk A.P.

The software package ScicosLab experimental modeling of communication system based on noise-like signals, designed for simultaneous transmission in one channel of useful and service information for remote control modes of wireless communication system, which serves to provide information exchange between the control server and the control objects.

Time, spectral diagrams and autocorrelation function of the signals transmitted in the communication channel of the simulated communication system were obtained. It is noted that the obtained qualitative indicators show that the transmitted signals are noise-like and have a continuous appearance in the time and spectral region. Autocorrelation function also confirms the above. Also from the time and spectral diagrams it is impossible to visually distinguish the transmitted useful signals, which are sequences of uniform rectangular pulses, which indicates their secrecy from an outside observer. On the basis of wavelet analysis, a scalogram of the signals transmitted in the communication channel of the simulated communication system was obtained. As can be clearly seen in the diagram – in the communication channel is transmitted two signals (a useful signal and a noise-like signal), although the time, spectral diagrams and autocorrelation function is practically not visible. Thus, with the help of wavelet analysis it was possible to identify two signals from one noise-like signal, which indicates the lack of secrecy of the communication system based on noise-like signals. To counteract the wavelet analysis of communication systems based on noise-like signals, in which several useful signals are transmitted simultaneously in one communication channel, it is necessary that the signals transmitted in the communication channel have scalograms close to the white noise scalogram, which is a classic approach for protected wireless security systems. This can be achieved in different ways, for example, to use as an expansion code signals obtained by chaotic signal generators.

The subject of published articles on the nomenclature of specialties

2.2.15 Systems, networks and telecommunications (technical sciences)

2.3.1 System analysis, management and processing of information (technical sciences)

2.3.5 Mathematical and software of computing systems, complexes and computer networks (technical sciences)

2.3.6 Methods and information protection systems, information security (technical sciences)

2.5.13 Design, design and production of aircraft (technical sciences)

2.5.16 Dynamics, ballistics, the movement of aircraft (technical sciences)

Editorial board

Bobrowsky V.I.
(Ph.D., Associate Professor, Head of Department of "INTELTEH")

Borisov V.V.
(Ph.D., Professor, Actual Member of the Academy of Military Sciences, Professor, Department of Computer Science of MPEI)

Budko P.A.
(Ph.D., Professor, Department of Technical communication and automation in S.M. Budjonny Military Academy of the Signal Corps)

Budnikov S.A.
(Ph.D., associate professor, Actual Member of the Academy of Education Informatization, Head of the automated control systems Department in Russian Air Force Military Educational and Scientific Center “Air Force Academy named after Professor N.E. Zhukovsky and Y.A. Gagarin”)

Verhova G.V.
(Ph.D., Professor, Head of Department of Automation communication companies In the Bonch-Bruevich Saint Petersburg State University of Telecommunications)

Goncharevsky V.S.
(Ph.D., Professor, Honored Worker of Science and Technology of the Russian Federation, Professor of technologies and technical support and maintenance of the automated control systems in Military Space Academy of A.F. Mozhaysky)

Komashinskiy V.I.
(Ph.D., Professor, professor of processing and transmission discrete messages in the Bonch-Bruevich Saint Petersburg State University of Telecommunications)

Kirpanev A.V.
(Ph.D., Associate Professor, Head of JSC "Scientific Production Enterprise "Radar MMS")

Kurnosov V.I.
(Ph.D., Professor, Academician of Academy of Sciences of the Arctic, Academician of the International Academy of Informatization, International Academy of defense, security, law and order, corresponding member of the Academy of Natural Sciences, Senior Researcher" Open Joint Stock Company "Scientific Research Institute "Rubin")

Manuilov Y.S.
(Ph.D., Professor, Department of automated control systems space complexes in Military Space Academy of A.F. Mozhaysky)

Morozov A.V.
(Ph.D., Professor, Actual Member of the Academy of Military Sciences, Head of the Department of automated command and control systems in Military Аcademy of troops of antiaircraft defense)

Moshak N.N.
(Ph.D., Associate Professor, head of the department of "INTELTEH")

Prorok V.Y.
(Ph.D., Professor, professor of automatic control systems in Military Space Academy of A.F. Mozhaysky)

Semenov S.S.
(Ph.D., associate professor, professor of technical communication and automation in S.M. Budjonny Military Academy of the Signal Corps)

Sinicyn E.A.
(Ph.D., Professor, Head of the Research Department of JSC "The All-Russian research institute of radio equipment")

Shatrakov Y.G.
(Ph.D., Professor, Honored Worker of Science, Scientific Secretary of JSC "The All-Russian research institute of radio equipment")